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Warmest 12-Month Period Recorded In US
First time accepted submitter seanzig writes "Dr. Jeff Masters of Weather Underground provides a good overview of the State of the Climate Report from NOAA's National Climatic Data Center (NCDC). May 2011 through Apr. 2012 broke the previous record (Nov. 1999 — Oct. 2000). A number of other interesting records (e.g., warmest March on record) and stats emerged. It just presents the data and does not surmise anything about the causes or what should be done about it."
Let me fill in the blanks for you. It's getting warmer because of anthropogenic carbon emissions. And no matter what you think should be done about it, nothing is going to be done about it because people are not going to agree on a common course of action.
So, better get used to it: it's going to get a lot warmer. But why that may be unpleasant and costly for some, it's not going to be the end of civilization.
"Well, I think there's little disagreement that a "large" fraction is human caused, although obviously some small fraction is natural variation."
I don't know whether this is disingenuous or you just don't understand.
The whole reason there even exists controversy about this in the first place, is that the signal is very small in relation to the noise: any human-caused differences are so small in relation to the natural variations that it has been nearly impossible to detect (if, indeed, it has actually been detected).
"some small fraction is natural..." is not the real situation at all. The problem is the opposite: the vast majority of it is natural. Any scientist, even the staunchest AGW supporter, will admit that if he/she has any pretension to honesty at all.
Do you have a link for that somewhere? I will have to listen to some folks in some other forums tooting their horn as they jump up and down in joy over this news, and I'd like to temper their excitement.
Reports like this are like a tin can on a fence for anti global warming people. At the time I write this, I see dozens of posts saying "and now all the global warming people will take this as proof", and not one global warming person taking it as proof.
For the record, this is not proof of global warming. It is a very extreme regional climate event of the type that climate change theory predicts will become common, but you can't attribute individual events to the long-term trend.
For the record, this means jack diddly in terms of global temperature change, the contiguous US is too small to matter. The past 3 months did not set a global record. However, it has been pretty warm: global temperature this year so far is in the top 25%... just like every other year this century.
http://www.ncdc.noaa.gov/sotc/global/
How are they not ?
Random deviations in a chaotic system (like weather) are not bound to any duration. All you know is that random deviations have a finite duration, it can be arbitrarily long (including effectively infinite, meaning until the end of the earth).
It is saddening that people are even arguing this. You don't grasp the complexity of the problem. The reason we believe global warming occurs is that many different readings -not all- point in the same direction. All measurements, regardless of their duration are subject to random deviations, which by definition have random durations. Some probably have durations measured in millions of years.
Ahhhh yes....
Let's compare all those highly-accurate satellite temperature measurements with the satellite data from only 200 years ago when Ben Franklin lofted the first earth observing satellite.... oh, wait, ....nope.... I guess we have no such data. Oh, alright, lets use the highly-calibrated thermometer data from way back 200 years ago when some sea captain measured the temperature somewhere (plus or minus 200 miles from a point in the mid-Atlantic) using his very accurate mercury thermometer that was carefully calibrated to the NIST standards.... oh, wait, nope.... no such traceable calibration and the candle-light made reading that thermometer within 1/10th of a degree relative to a scratch in the brass frame a bit tough.... not to mention that the guy was tired and did not see any reason to worry too much about being too precise...
That was not working too well... let's use the hyper-accurate temperature measuring device all Americans prefer to use when they can afford it: tree rings. Yes, a thermometer from 200 years ago has a few calibration issues and the satellites were not very good 200 years ago, but everybody who believes in science knows that a tree ring or some muck from the bottom of a river is accurate to within 1% of a degree! Why, I for one, chop down a tree and check the tree rings for every morning....why bother with a thermometer when an axe and a precise temperature tree are available?
All the hype about "record" and "all-time" high or low temp data is manipulative and speculative. There were no humans (not scientists, nor even amateurs) taking and recording temperature data on 80% of the North American continent before 300 years ago, and the planet is at least 6000 years old (Grin) so we are statistically blind to most of the temperatures for world history. If you plug-in the actual age of the Earth, you know that we know, with calibrated precision, next to nothing about the long-term "global temperature". Comparing data from highly-accurate, calibrated and traceable, modern scientific instruments to creative and imaginative speculation about past temperatures is extremely dishonest and anti-science, but a great way to write a paper and get more taxpayer funds for another year of "research", which beats the hell out of flipping burgers
I'm no luddite... I used to design and build scientific instruments and now work in aerospace, but I am outraged but the so-called scientific climate studies that are done by people who have (and I will be charitable here) apparently forgotten some of the most-basic rules of science in order to score political points or stay popular with their peers. Rules like:
1. Different data sets measured two different ways with two different types of instrument cannot be honestly compared without a common calibration.
2. Data collected with two identical instruments still cannot be compared if one of them lacks traceable calibration
3. You can never gain absolute precision by using additional imprecise data. (in other words: if you sum-average or in other ways lump-together a bunch of data that is accurate to 1 percent, you may get a more-precise idea of what your imprecise measuring device thought it saw, but you have absolutely not obtained a better-than 1 percent measurement of what was actually there... and such data manglng actually reduces absolute precision)
They used to teach this stuff in first-year science classes several decades ago...